Anthropic says Opus 5.5 matches Fable 5.1 "on most tasks" while costing about 40% less to run than Opus 5; Opus 5.5 costs $4/1M input and $20/1M output tokens (Matthias Bastian/The Decoder)

Anthropic announced that its new Opus 5.5 model performs comparably to Fable 5.1 "on most tasks." Notably, Opus 5.5 is approximately 40% cheaper to operate than Opus 5. The pricing for Opus 5.5 is set at $4 per 1 million input tokens and $20 per 1 million output tokens. This development was reported by Matthias Bastian for The Decoder, highlighting the model's improved cost-efficiency while maintaining performance.

This report highlights Opus 5.5's cost efficiency, costing about 40% less to run than Opus 5 while matching Fable 5.1 on most tasks, unlike previous models.